龙骨，小鳍和盔甲帮助引导水流流过身体表面，他们用这种方式来降低水的阻力（看图示）。
The keels, finlets, and corselet help direct the flow of water over the body surface in such as way as to reduce resistance (see the figure).
鲨鳍小翼看起来非常锋利！
每片鳍状木结构都有一系列小的挤压处，水平堆叠时，在木棚外立面创建了一个森林模式。
Each fin has a series of small extrusions that, when stacked horizontally, creates the forest pattern that defines the shed exterior.
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